package string;

public class StringAndStringBuilderDemo {
	public static void main(String[] args) {
		
		String str = "a";
		for (int i=0;i<1000000;i++){
			str = str+"a";
		}
		System.out.println(str);
		System.out.println("执行完毕");
		
		
//
//		StringBuilder builder = new StringBuilder("a");
//		for (int i=0;i<1000000;i++){
//			builder.append("a");
//		}
//		System.out.println(builder);
//		System.out.println("执行完毕");
	}
}
